0 Surface data - land 0 Hourly synoptic observations from fixed-land stations (SYNOP) Operational 0 Surface data - land 1 Intermediate synoptic observations from fixed-land stations (SYNOP) Operational 0 Surface data - land 2 Main synoptic observations from fixed-land stations (SYNOP) Operational 0 Surface data - land 3 Hourly synoptic observations from mobile-land stations (SYNOP MOBIL) Operational 0 Surface data - land 4 Intermediate synoptic observations from mobile-land stations (SYNOP MOBIL) Operational 0 Surface data - land 5 Main synoptic observations from mobile-land stations (SYNOP MOBIL) Operational 0 Surface data - land 6 One-hour observations from automated stations Operational 0 Surface data - land 7 n-minute observations from AWS stations Operational 0 Surface data - land 8 Radiation observations from one-hour period Operational 0 Surface data - land 9 Radiation observations from n-minute period Operational 0 Surface data - land 10 Routine aeronautical observations (METAR) Operational 0 Surface data - land 11 Special aeronautical observations (SPECI) Operational 0 Surface data - land 14 Ground-based GPS humidity observations (GPSIWV) Operational 0 Surface data - land 20 Climatological observations (CLIMAT) Operational 0 Surface data - land 21 Climatological observations (monthly reports of daily climate data) Operational 0 Surface data - land 30 Sferics locations Operational 0 Surface data - land 40 Hydrologic reports Operational 0 Surface data - land 50 Hourly synoptic observations with supplementary one-hour data Operational 0 Surface data - land 51 Intermediate synoptic observations with supplementary one-hour data Operational 0 Surface data - land 52 Main synoptic observations with supplementary one-hour data Operational 1 Surface data - sea 0 Synoptic observations (SHIP) Operational 1 Surface data - sea 6 One-hour observations from automated stations Operational 1 Surface data - sea 7 n-minute observations from AWS stations Operational 1 Surface data - sea 15 Uncrewed surface vehicle Operational 1 Surface data - sea 20 Climatological observations (CLIMAT SHIP) Operational 1 Surface data - sea 25 Buoy observation (BUOY) Operational 1 Surface data - sea 30 Tide gauge Operational 1 Surface data - sea 31 Observed water level time series Operational 2 Vertical soundings (other than satellite) 1 Upper-wind reports from fixed-land stations (PILOT) Operational 2 Vertical soundings (other than satellite) 2 Upper-wind reports from ships (PILOT SHIP) Operational 2 Vertical soundings (other than satellite) 3 Upper-wind reports from mobile land stations (PILOT MOBIL) Operational 2 Vertical soundings (other than satellite) 4 Upper-level temperature/humidity/wind reports from fixed-land stations (TEMP) Operational 2 Vertical soundings (other than satellite) 5 Upper-level temperature/humidity/wind reports from ships (TEMP SHIP) Operational 2 Vertical soundings (other than satellite) 6 Upper-level temperature/humidity/wind report from mobile land stations (TEMP MOBIL) Operational 2 Vertical soundings (other than satellite) 7 Upper-level temperature/humidity/wind reports from dropwinsondes (TEMP DROP) Operational 2 Vertical soundings (other than satellite) 10 Wind profiler reports Operational 2 Vertical soundings (other than satellite) 11 RASS temperature profiles Operational 2 Vertical soundings (other than satellite) 14 Upper-level temperature/humidity/wind reports from descent radiosondes originally launched from fixed-land stations Operational 2 Vertical soundings (other than satellite) 15 Upper-level temperature/humidity/wind reports from descent radiosondes originally launched from ships Operational 2 Vertical soundings (other than satellite) 16 Upper-level temperature/humidity/wind reports from descent radiosondes originally launched from mobile land stations Operational 2 Vertical soundings (other than satellite) 20 ASDAR/ACARS profiles (AMDAR) Operational 2 Vertical soundings (other than satellite) 21 Profiles of atmospheric constituents concentrations Operational 2 Vertical soundings (other than satellite) 25 Climatological observations from fixed-land stations (CLIMAT TEMP) Operational 2 Vertical soundings (other than satellite) 26 Climatological observations from ships (CLIMAT TEMP SHIP) Operational 3 Vertical soundings (satellite) 0 Temperature (SATEM) Operational 3 Vertical soundings (satellite) 1 TIROS (TOVS) Operational 3 Vertical soundings (satellite) 2 ATOVS Operational 3 Vertical soundings (satellite) 3 AMSU-A Operational 3 Vertical soundings (satellite) 4 AMSU-B Operational 3 Vertical soundings (satellite) 5 HIRS Operational 3 Vertical soundings (satellite) 6 MHS Operational 3 Vertical soundings (satellite) 7 IASI Operational 3 Vertical soundings (satellite) 8 VASS (Vertical atmospheric sounding system) Operational 3 Vertical soundings (satellite) 20 IR temperature/humidity sounding Operational 3 Vertical soundings (satellite) 30 Hyperspectral temperature/humidity sounding Operational 3 Vertical soundings (satellite) 40 MW temperature/humidity sounding Operational 3 Vertical soundings (satellite) 50 Radio occultation sounding Operational 4 Single level upper-air data (other than satellite) 0 ASDAR/ACARS (AMDAR) Operational 4 Single level upper-air data (other than satellite) 1 Manual (AIREP, PIREP) Operational 4 Single level upper-air data (other than satellite) 2 Mode-S Operational 5 Single level upper-air data (satellite) 0 Cloud wind data (SATOB) Operational 5 Single level upper-air data (satellite) 1 Cloud properties Operational 6 Radar data 0 Reflectivity data Operational 6 Radar data 1 Doppler wind profiles Operational 6 Radar data 2 Derived products Operational 6 Radar data 3 Ground radar weather (RADOB) Operational 7 Synoptic features 0 Forecast tropical cyclone tracks from EPS Operational 7 Synoptic features 1 Squall line Operational 7 Synoptic features 2 Forecast tropical cyclone from deterministic system Operational 8 Physical/chemical constituents 0 Surface ozone Operational 8 Physical/chemical constituents 1 Ozone vertical sounding Operational 8 Physical/chemical constituents 2 Total ozone Operational 8 Physical/chemical constituents 3 Acid rain Operational 9 Dispersal and transport 0 Trajectories, analysis or forecast Operational 10 Radiological data 1 Observation (RADREP) Operational 10 Radiological data 2 Forecast (RADOF) Operational 12 Surface data (satellite) 0 ERS-uwa Operational 12 Surface data (satellite) 1 ERS-uwi Operational 12 Surface data (satellite) 2 ERS-ura Operational 12 Surface data (satellite) 3 ERS-uat Operational 12 Surface data (satellite) 4 SSM/I radiometer Operational 12 Surface data (satellite) 5 Quikscat Operational 12 Surface data (satellite) 6 Surface temp./radiation (SATOB) Operational 12 Surface data (satellite) 7 ASCAT data Operational 12 Surface data (satellite) 8 Soil moisture Operational 12 Surface data (satellite) 9 Normalized differential vegetation index (NDVI) Operational 12 Surface data (satellite) 10 Normalized radar backscatter Operational 12 Surface data (satellite) 11 Surface emissivity Operational 12 Surface data (satellite) 12 Sea-surface temperature Operational 12 Surface data (satellite) 13 Precipitation Operational 21 Radiances (satellite measured) 0 Earth radiation budget Operational 21 Radiances (satellite measured) 5 Cross-track infrared sounder Operational 21 Radiances (satellite measured) 6 Advanced technology microwave sounder Operational 21 Radiances (satellite measured) 7 Visible/infrared imager radiometer suite Operational 22 Radar (satellite) but not altimeter and scatterometer 0 Cloud and precipitation radar Operational 22 Radar (satellite) but not altimeter and scatterometer 1 Synthetic aperture radar Operational 23 Lidar (satellite) 0 Lidar based missions (for wind, for cloud/aerosol, for water vapour, for altimetry) Operational 24 Scatterometry (satellite) 0 Wind scatterometry Operational 25 Altimetry (satellite) 0 Radar altimetry Operational 26 Spectrometry (satellite) 0 Cross nadir short-wave spectrometry (for chemistry) Operational 26 Spectrometry (satellite) 1 Cross nadir IR spectrometry (for chemistry) Operational 26 Spectrometry (satellite) 2 Limb sounding short-wave spectrometry Operational 26 Spectrometry (satellite) 3 Limb sounding IR spectrometry Operational 26 Spectrometry (satellite) 4 Limb sounding sub-millimetre wave spectrometry Operational 30 Calibration dataset (satellite) 0 Subsetted data Operational 30 Calibration dataset (satellite) 1 Collocated data Operational 30 Calibration dataset (satellite) 2 On-board calibration data Operational 30 Calibration dataset (satellite) 3 Bias monitoring Operational 30 Calibration dataset (satellite) 4 Near-real-time correction Operational 30 Calibration dataset (satellite) 5 Re-analysis correction Operational 31 Oceanographic data 0 Surface observation Operational 31 Oceanographic data 1 Surface observation along track (TRACKOB) Operational 31 Oceanographic data 2 Spectral wave observation (WAVEOB) Operational 31 Oceanographic data 3 Bathythermal observation (BATHY) Operational 31 Oceanographic data 4 Subsurface floats (profile) Operational 31 Oceanographic data 5 XBT/XCTD profiles (TESAC) Operational 31 Oceanographic data 6 Waves reports Operational 31 Oceanographic data 7 Tsunameter data Operational 32 Lidar (ground-based) 0 Wind, cloud, aerosol Operational 101 Image data (satellite) 0 Multi-purpose VIS/IR imagery Operational 101 Image data (satellite) 1 Conical scanning MW imagery (intermediate frequencies) Operational 101 Image data (satellite) 2 Low frequency MW imagery Operational 101 Image data (satellite) 3 Ocean colour imagery Operational 101 Image data (satellite) 4 Imagery with special viewing geometry Operational 101 Image data (satellite) 5 Lightning imagery Operational 101 Image data (satellite) 6 High-resolution short-wave imagery for land observation Operational 101 Image data (satellite) 7 SMOS data Operational